CN113020580A - Arc-shaped vortex-resisting device for bottom of steel ladle - Google Patents
Arc-shaped vortex-resisting device for bottom of steel ladle Download PDFInfo
- Publication number
- CN113020580A CN113020580A CN202110225864.3A CN202110225864A CN113020580A CN 113020580 A CN113020580 A CN 113020580A CN 202110225864 A CN202110225864 A CN 202110225864A CN 113020580 A CN113020580 A CN 113020580A
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- Prior art keywords
- arc
- base
- overflowing hole
- ladle
- boss
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention provides an arc-shaped vortex-resisting device for the bottom of a steel ladle, which comprises a base and a blocking boss, wherein the base is in an isosceles trapezoid annular structure, the bottom edge of the base is an arc edge, the arc edge and the steel ladle are concentrically arranged, a communicated fixing groove is arranged along the outer peripheral surface of the base, a communicated groove is arranged at the outer edge of the top surface of the base, the blocking boss is arranged along the inner edge of the top surface of the base, the blocking boss and the inner wall of the base are positioned on the same horizontal plane, and a plurality of overflowing holes are arranged on the blocking boss at intervals.
Description
Technical Field
The invention belongs to the technical field of steelmaking continuous casting, and particularly relates to an arc-shaped vortex-resisting device for the bottom of a steel ladle.
Background
The ladle is a vessel used for containing molten steel and carrying out refining and pouring in the continuous casting process flow. In the production process of continuous cast steel, after slag containing iron oxide, manganese oxide and silicon oxide in a steel ladle flows into a tundish, easily-oxidized alloy elements such as aluminum, titanium and the like in molten steel are burnt and aluminum oxide inclusions are generated, so that the cleanliness of the molten steel is influenced, and the surface quality problem of steel products is easily caused. In addition, alumina inclusions in molten steel can cause nozzle blockage, and influence the flow field in the crystallizer and the number of continuous casting furnaces of the tundish. In order to prevent slag in the ladle from entering the tundish, when steel grades with strict cleanliness requirements, such as automobile plates, are produced, steel manufacturers adopt ladle steel retaining operation, so that the quality requirements are met, but the yield of molten steel is low. At present, how to improve the yield of molten steel in the process of pouring steel ladles is a difficult problem which troubles many steel plants, and how to take measures to weaken or even eliminate confluent vortex is the key point for controlling the slag discharging of steel ladles and improving the yield of the molten steel. Therefore, the development of a ladle slag control device with high efficiency and low cost is very important and urgent.
At present, the slag discharging control is mainly focused on magnetic field detection control and inclined surface ladle bottom structure control, the magnetic field detection can only judge the slag discharging time and can not effectively reduce the slag discharging amount, and the inclined surface ladle bottom structure can only improve the yield of molten steel to a certain extent. Therefore, the research and development of a refractory material structure with good performance for controlling the slag tapping at the bottom of the steel ladle have obvious effects on the production of clean steel and the improvement of the yield of molten steel.
Disclosure of Invention
The invention aims to solve the technical problems and provides an arc-shaped vortex-resisting device for the bottom of a steel ladle.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a whirlpool device is hindered to arc type for ladle bottom, its characterized in that includes the base and blocks the boss, the base is the isosceles trapezoid annular structure of arc limit for the base, the arc limit sets up with the ladle is concentric, is equipped with the fixed slot of intercommunication along the base outer peripheral face, and base top surface outer fringe is equipped with the recess of intercommunication, block that the boss sets up along base top surface inner edge, block that the inner wall that boss and base are located same horizontal plane, block that the interval is equipped with a plurality of overflow holes on the boss.
According to the scheme, the turning connection positions on the base and the blocking boss are subjected to arc transition treatment, and the radii of the arc transition positions which are symmetrical left and right are the same.
According to the scheme, the fixing grooves and the grooves are arc-shaped grooves, and the radiuses of the arc-shaped grooves are the same.
According to the scheme, the central symmetry of the bottom edge and the top edge of the blocking boss is provided with the first overflowing hole and the second overflowing hole, the first overflowing hole is provided with the third overflowing hole and the fourth overflowing hole in a central symmetry mode, the fifth overflowing hole, the sixth overflowing hole, the seventh overflowing hole, the eighth overflowing hole, the ninth overflowing hole and the tenth overflowing hole are symmetrically arranged on the two isosceles edges respectively, the third overflowing hole is aligned with the center of the eighth overflowing hole, and the fourth overflowing hole is aligned with the center of the seventh overflowing hole.
According to the scheme, the base is embedded at the bottom of the ladle, the blocking boss protrudes out of the bottom surface of the ladle, and the connecting line of the center of a water gap at the bottom of the ladle and the center of the bottom of the ladle is collinear with the central lines of the base and the blocking boss.
According to the scheme, the sizes of the overflowing holes are the same.
The invention has the beneficial effects that: the arc-shaped vortex-resisting device for the bottom of the steel ladle is provided, the device is added at the bottom of the steel ladle, the critical height of slag discharging of steel ladle slag can be effectively reduced, so that the slag discharging amount of the steel ladle in the tail period is reduced, and compared with the existing slag control method, the method is more direct and effective.
Drawings
FIG. 1 is a schematic view showing the installation of an arc-shaped vortex breaker according to an embodiment of the present invention.
Fig. 2 is a top view of fig. 1.
FIG. 3 is a top view of an arcuate vortex breaker according to one embodiment of the invention.
Figure 4 is a side view of an arcuate vortex breaker according to one embodiment of the invention.
Figure 5 is a front view of an arcuate vortex breaker according to one embodiment of the invention.
FIG. 6 is a diagram showing the effect of the arc-shaped vortex-resisting device of the embodiment of the invention.
Detailed Description
For a better understanding of the present invention, reference is made to the following description taken in conjunction with the accompanying drawings and examples.
As shown in figures 1-5, an arc-shaped vortex blocking device for the bottom of a steel ladle comprises a base 1 and a blocking boss 2, wherein the base is of an isosceles trapezoid annular structure with an arc-shaped edge as the base, the arc-shaped edge and the steel ladle 3 are concentrically arranged, a fixing groove 4 communicated with each other is arranged along the outer peripheral surface of the base, a groove 5 communicated with each other is arranged at the outer edge of the top surface of the base, the blocking boss is arranged along the inner edge of the top surface of the base, the blocking boss and the inner wall of the base are positioned on the same horizontal plane, a plurality of overflowing holes 6 are arranged on the blocking boss at intervals.
The turning connection parts on the base and the blocking lug boss are subjected to arc transition treatment, and the radii of the arc transition parts which are symmetrical left and right are the same.
The fixed groove and the groove are arc-shaped grooves, and the radiuses of the arc-shaped grooves are the same.
The center of the bottom edge and the top edge of the blocking boss is symmetrically provided with a first overflowing hole 7 and a second overflowing hole 8, the first overflowing hole is used as the center to be symmetrically provided with a third overflowing hole 9 and a fourth overflowing hole 10, the two isosceles edges are respectively symmetrically provided with a fifth overflowing hole 11, a sixth overflowing hole 12, a seventh overflowing hole 13, an eighth overflowing hole 14, a ninth overflowing hole 15 and a tenth overflowing hole 16, the center of the third overflowing hole is aligned with the center of the eighth overflowing hole, and the center of the fourth overflowing hole is aligned with the center of the seventh overflowing hole.
The base is embedded at the bottom of the ladle, the blocking boss protrudes out of the bottom surface of the ladle, and the connecting line of the circle center of the water gap 17 at the bottom of the ladle and the circle center at the bottom of the ladle is collinear with the central lines of the base and the blocking boss.
Example one
The width of each overflowing hole is 150-300 mm, the height of each overflowing hole is 200-350 mm, the preferred width of each overflowing hole is 220mm, and the preferred height of each overflowing hole is 250 mm; the arc radiuses of four included angles of the inner wall surface of the blocking boss are the same and are 30-80 mm, preferably 45mm, and the radius of the arc of the bottom edge is 2200-3000 mm, preferably 2400 mm; the arc radiuses of two included angles at the bottom edge of the outer peripheral surface of the blocking boss are the same and are 150-250 mm, preferably 210mm, the arc radiuses of two included angles at the top edge are 200-300 mm, preferably 210mm, and the arc radiuses of the bottom edge are 2400-3300 mm, preferably 2600 mm; the arc radiuses of two bottom corners of the inner side edge of the groove on the top surface of the blocking boss are the same and are 200-300 mm, preferably 240mm, the arc radiuses of two top corners are the same and are 230-330 mm, preferably 250mm, and the arc radiuses of the bottom edges are 2500-3400 mm, preferably 2700 mm; the arc radiuses of two bottom corners of the outer side edge of the groove are the same and are 380-500 mm, preferably 410mm, the arc radiuses of two top corners are the same and are 380-500 mm, preferably 430mm, and the radius of the arc of the bottom edge is 2600-3500 mm, preferably 2800 mm; the height of the blocking boss is 350-550 mm, preferably 450mm, the isosceles length of the inner wall surface is 1300-1600 mm, preferably 1460mm, and the isosceles length of the outer wall surface is 2000-2500 mm, preferably 2200 mm; the arc radiuses of two bottom corners of the outer wall surface of the base are the same and are 450-550 mm, preferably 450mm, the arc radiuses of two top corners are the same and are 450-500 mm, preferably 480mm, and the radius of an arc of the bottom side is 2800-3700 mm, preferably 3000 mm; the arc radius of base fixed slot is 80 ~ 150mm, preferably 110mm, and the arc radius of base top surface recess is 50 ~ 100mm, preferably 80mm, and the base height is 400 ~ 550mm, preferably 440 mm.
The arc-shaped vortex-resisting device is installed at the bottom of a steel ladle, so that the base part is completely poured into the bottom of the steel ladle during construction, and the boss part is prevented from being positioned above the bottom surface of the steel ladle. Meanwhile, the arc-shaped surface is ensured to be concentric with the ladle. The connecting line of the center of the water gap and the center of the bottom of the ladle is ensured to be collinear with the central lines of the base and the blocking boss.
The results of numerical simulation of this type of vortex-damping device show that the critical height of the vortex can be reduced by 25.6% compared to the vortex without the vortex-damping device, as shown in fig. 6.
The present invention is illustrated by the above examples, and is not limited to the embodiments of the present invention, and the structure, the position arrangement and the connection of the components may be changed. On the basis of the present invention, any changes or equivalent changes of the individual components according to the principle of the present invention should not be excluded from the scope of the present invention.
Claims (6)
1. The utility model provides a whirlpool device is hindered to arc type for ladle bottom, its characterized in that includes the base and blocks the boss, the base is the isosceles trapezoid annular structure of arc limit for the base, the arc limit sets up with the ladle is concentric, is equipped with the fixed slot of intercommunication along the base outer peripheral face, and base top surface outer fringe is equipped with the recess of intercommunication, block that the boss sets up along base top surface inner edge, block that the inner wall that boss and base are located same horizontal plane, block that the interval is equipped with a plurality of overflow holes on the boss.
2. The arc-shaped vortex-resisting device for the bottom of the steel ladle as claimed in claim 1, wherein the turning connection parts on the base and the baffle boss are both subjected to arc transition treatment, and the radii of the arc transition parts which are symmetrical left and right are the same.
3. The arc-type vortex breaking device for the bottom of the ladle according to claim 1 or 2, wherein the fixing groove and the groove are arc-shaped grooves, and the radius of the arc-shaped grooves is the same.
4. The arc-shaped vortex suppression device for the bottom of the ladle according to claim 3, wherein the center of the bottom edge and the top edge of the blocking boss is symmetrically provided with a first overflowing hole and a second overflowing hole, the center of the first overflowing hole is symmetrically provided with a third overflowing hole and a fourth overflowing hole, the center of the two isosceles edges are symmetrically provided with a fifth overflowing hole, a sixth overflowing hole, a seventh overflowing hole, an eighth overflowing hole, a ninth overflowing hole and a tenth overflowing hole, the third overflowing hole is aligned with the center of the eighth overflowing hole, and the fourth overflowing hole is aligned with the center of the seventh overflowing hole.
5. The arc-shaped vortex-resisting device for the bottom of the ladle as claimed in claim 4, wherein the base is embedded in the bottom of the ladle, the baffle boss protrudes out of the bottom surface of the ladle, and a connecting line of the center of a water gap at the bottom of the ladle and the center of the bottom of the ladle is collinear with the center lines of the base and the baffle boss.
6. The arc type vortex breaker for the bottom of the ladle according to claim 4 or 5, wherein the plurality of overflowing holes have the same size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110225864.3A CN113020580B (en) | 2021-03-01 | 2021-03-01 | Arc-shaped vortex-resisting device for bottom of steel ladle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110225864.3A CN113020580B (en) | 2021-03-01 | 2021-03-01 | Arc-shaped vortex-resisting device for bottom of steel ladle |
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| CN113020580A true CN113020580A (en) | 2021-06-25 |
| CN113020580B CN113020580B (en) | 2022-08-16 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100775336B1 (en) * | 2006-12-22 | 2007-11-08 | 주식회사 포스코 | Apparatus for preventing vortex of molten steel in tundish |
| CN102029384A (en) * | 2009-09-29 | 2011-04-27 | 东北大学 | Vortex prevention device for relieving fluid vortex |
| CN102642017A (en) * | 2012-04-17 | 2012-08-22 | 莱芜钢铁集团有限公司 | Ladle bottom structure of continuous casting ladle |
| CN203459675U (en) * | 2013-09-27 | 2014-03-05 | 安徽工业大学 | Slag-rolling prevention device for steel ladle liquid steel casting |
| CN203484651U (en) * | 2013-09-27 | 2014-03-19 | 宝山钢铁股份有限公司 | Continuous casting steel liquid ladle low in vortex and high in molten steel yield |
| CN211218658U (en) * | 2019-12-05 | 2020-08-11 | 马鞍山钢铁股份有限公司 | Molten steel rotation-resisting device in steel ladle |
| CN112108642A (en) * | 2020-09-29 | 2020-12-22 | 重庆大学 | Steel ladle and method for preventing slag entrapment of molten steel |
-
2021
- 2021-03-01 CN CN202110225864.3A patent/CN113020580B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100775336B1 (en) * | 2006-12-22 | 2007-11-08 | 주식회사 포스코 | Apparatus for preventing vortex of molten steel in tundish |
| CN102029384A (en) * | 2009-09-29 | 2011-04-27 | 东北大学 | Vortex prevention device for relieving fluid vortex |
| CN102642017A (en) * | 2012-04-17 | 2012-08-22 | 莱芜钢铁集团有限公司 | Ladle bottom structure of continuous casting ladle |
| CN203459675U (en) * | 2013-09-27 | 2014-03-05 | 安徽工业大学 | Slag-rolling prevention device for steel ladle liquid steel casting |
| CN203484651U (en) * | 2013-09-27 | 2014-03-19 | 宝山钢铁股份有限公司 | Continuous casting steel liquid ladle low in vortex and high in molten steel yield |
| CN211218658U (en) * | 2019-12-05 | 2020-08-11 | 马鞍山钢铁股份有限公司 | Molten steel rotation-resisting device in steel ladle |
| CN112108642A (en) * | 2020-09-29 | 2020-12-22 | 重庆大学 | Steel ladle and method for preventing slag entrapment of molten steel |
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| CN113020580B (en) | 2022-08-16 |
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